CAIRO - Islamic State claimed responsibility for Friday's attack on a Shi'ite Muslim mosque in the Afghan capital Kabul that killed at least 14 people, the Sunni militant group's Amaq news agency said. 'Islamic State fighters launched an attack on a (Shi'ite mosque) in the Khair Khana area in the Afghan city of Kabul,' the news agency said. A suicide bomber detonated himself at the gate of the mosque as other attackers stormed the building as worshippers gathered for Friday prayers, officials said.